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In a mobile ad-hoc network (MANET), node mobility has a significant impact on the performance of routing protocols. Most of the previous research has been focused on entity mobility models, i.e., movements of the mobile nodes are independent of each other. In this paper, we investigate the impact of swarming behavior of mobile nodes, as observed in many mobile networks, on the performance of MANET...
Location based routing protocols are often used to deliver packets in VANET for the sake of scalability and lower overhead. Before exchanging information between moving vehicles, the location of destination node should be discovered. However, the existing location service employed in MANET is not very suitable for vehicular ad hoc network. In this paper, a vehicle location service protocol (VLS) is...
Threshold cryptography distributes the ability to provide a cryptographic service such as decryption or signing. It is an ideal choice to provide security services, such as authentication and access control, in MANETs or P2P systems. The paper proposes an ID- based threshold signature scheme, which has three attractive properties: (1) The user's co-signing key and signature share are all verifiable,...
In this paper we proposed a typical cooperative MIMO system grounded on wireless mobile ad hoc networks and brought forward the problem of time efficiency in cooperative MIMO system. And then adopting time efficiency, we analyzed the Shannon capacity limit of the cooperative MIMO system. The analysis shows two implications. First, only when intra-cluster channel is better enough than inter-cluster...
In the research area of mobile ad hoc network, ZRP which integrates advantages of proactive routing protocols and on-demand routing protocols has been the crucial research now. In this paper, the principle and the cache mechanism of ZRP are analyzed. In allusion to the problems of late-deletion and early-deletion in ZRP, the optimized A-ZRP which associates the routing information priority with the...
We proposed a publicly verifiable hybrid signcryption scheme which has no restriction to the message length. Based on the signcryption scheme, we designed a (t, n) threshold subliminal channel scheme for conveying a subliminal message to a group of users. The validity of signcryptions can be verified by anyone, but only the designated receiver can get the plaintext from the signcryption. Reconstructing...
Lack of online trusted dealer and group membership dynamics make the membership control become a challenging task in wireless ad hoc network. Based on the threshold cryptography (and verifiable secret sharing), we propose a secure membership control scheme using a new threshold signature based on the RSA variant. Compared with other proposed solutions based on RSA, the scheme does not need the operation...
While it has been shown that TCP Vegas provides better performance compared to TCP Reno, studies have identified various issues associated with the protocol in mobile ad hoc networks. We propose modifications to the congestion avoidance mechanism of the TCP Vegas to overcome these limitations. Our solution, named TCP Vegas_M, is dependent on FEDM fuzzy logic theory to distinguish network congestion...
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